| // Copyright 2014 The Servo Project Developers. See the COPYRIGHT |
| // file at the top-level directory of this distribution. |
| // |
| // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or |
| // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license |
| // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your |
| // option. This file may not be copied, modified, or distributed |
| // except according to those terms. |
| //! A one-dimensional length, tagged with its units. |
| |
| use num_traits; |
| |
| pub trait Zero { |
| fn zero() -> Self; |
| } |
| |
| impl<T: num_traits::Zero> Zero for T { |
| fn zero() -> T { |
| num_traits::Zero::zero() |
| } |
| } |
| |
| pub trait One { |
| fn one() -> Self; |
| } |
| |
| impl<T: num_traits::One> One for T { |
| fn one() -> T { |
| num_traits::One::one() |
| } |
| } |
| |
| pub trait Round: Copy { |
| fn round(self) -> Self; |
| } |
| pub trait Floor: Copy { |
| fn floor(self) -> Self; |
| } |
| pub trait Ceil: Copy { |
| fn ceil(self) -> Self; |
| } |
| |
| macro_rules! num_int { |
| ($ty:ty) => { |
| impl Round for $ty { |
| #[inline] |
| fn round(self) -> $ty { |
| self |
| } |
| } |
| impl Floor for $ty { |
| #[inline] |
| fn floor(self) -> $ty { |
| self |
| } |
| } |
| impl Ceil for $ty { |
| #[inline] |
| fn ceil(self) -> $ty { |
| self |
| } |
| } |
| }; |
| } |
| macro_rules! num_float { |
| ($ty:ty) => { |
| impl Round for $ty { |
| #[inline] |
| fn round(self) -> $ty { |
| num_traits::Float::round(self) |
| } |
| } |
| impl Floor for $ty { |
| #[inline] |
| fn floor(self) -> $ty { |
| num_traits::Float::floor(self) |
| } |
| } |
| impl Ceil for $ty { |
| #[inline] |
| fn ceil(self) -> $ty { |
| num_traits::Float::ceil(self) |
| } |
| } |
| }; |
| } |
| |
| num_int!(i16); |
| num_int!(u16); |
| num_int!(i32); |
| num_int!(u32); |
| num_int!(i64); |
| num_int!(u64); |
| num_int!(isize); |
| num_int!(usize); |
| num_float!(f32); |
| num_float!(f64); |
